Spruce shrubs and trees are conifers from the genus Picea, which includes 35 species. Spruce trees and shrubs are characterized by a branch structure, called a pulvinus, where the needles attach. This ...

University of Alberta research is showing how trees and fungi team up to survive and stay healthy against insect attacks—an alliance that could lead to more resilient forests. Endophytes—tiny ...

We were pushing through head-high willows along a brushy caribou trail, five days into our week-long trek across Alaska's Noatak valley, when my hiking partner, Brad Meiklejohn, startled me with a ...

FORT WAYNE, Ind. (WANE) — When searching for a Christmas tree to bring home this year, you may face a decline in spruce trees across Indiana as a sickness is causing them to lose their glow. Spruce ...

Spruce bark beetles don’t just tolerate their host tree’s chemical defenses—they actively reshape them into stronger antifungal protections. These stolen defenses help shield the beetles from ...

A new study, published in the Proceedings of the National Academy of Sciences (PNAS), finds that black spruce trees—a key species on the boreal landscape for millennia—are losing their resilience and ...

Anywhere else in the world, more trees would be a blessing. But in the far north of Alaska, they’re a reckoning. As the Arctic warms up to four times as fast as the rest of the planet, white spruce ...

TONGASS NATIONAL FOREST, Alaska — The Sitka spruce soaring more than 180 feet skyward has stood on this spot on Prince of Wales Island for centuries. While fierce winds have contorted the towering ...